Foldable display modules and foldable display devices

Abstract

The present disclosure provides foldable display modules and foldable display devices. The foldable display module includes a display panel and a support plate. The support plate includes first hole groups and second hole groups alternately arranged along a second direction. The first hole group includes a plurality of first via holes, and the second hole group includes a plurality of second via holes. In a first direction, a length of the first via hole is greater than a length of the second via hole, and the second via holes are arranged corresponding to first spacer parts each located between two adjacent first via holes.

The invention claimed is: 
     
         1 . A foldable display module, comprising at least one bending area and non-bending areas connected to the bending area, the bending area connected between two of the non-bending areas, the bending area comprising a first bending center line parallel to a first direction, and comprising:
 a display panel;   a support plate, disposed on a side of the display panel,   wherein the support plate comprises a plurality of first hole groups and a plurality of second hole groups, each of extending directions of the first hole groups and the second hole groups is parallel to the first direction, the first hole groups and the second hole groups are alternately arranged along a second direction, and the second direction is arranged to form a preset angle with the first direction; each of the first hole groups comprises a plurality of first via holes spaced along the first direction, each of the second hole groups comprises a plurality of second via holes spaced along the first direction, and a length of each of the first via holes in the first direction is greater than a length of each of the second via holes in the first direction; and   each of the first hole groups further comprises first spacer parts each located between two adjacent ones of the first via holes; and in the second direction, the second via holes are arranged corresponding to the first spacer parts;   wherein the plurality of first via holes in each first hole group of the first hole groups comprises two first kind holes disposed at both ends of the first hole group and one or more second kind holes disposed between the two first kind holes;   each of the first kind holes comprises a first part adjacent to a corresponding end of the first hole group and a second part away from the corresponding end of the first hole group;   each of the second kind holes comprises two third parts and a fourth part disposed between the two third parts, and the third parts and the fourth part are arranged along the first direction; and   in the second direction, a maximum width of the first part is less than a minimum width of the second part, and a minimum width of each of the third parts is greater than a maximum width of the fourth part.   
     
     
         2 . The foldable display module according to  claim 1 , wherein in a same one of the first kind holes, in the second direction, a ratio of a maximum width of the second part to a minimum width of the first part ranges from 1.5 to 2; and
 in a same one of the second kind holes, in the second direction, a ratio of a maximum width of each of the third parts to a minimum width of the fourth part ranges from 1.5 to 2.   
     
     
         3 . The foldable display module according to  claim 1 , wherein each of the second via holes comprises a fifth part corresponding to one of the first spacer parts and sixth parts located at both ends of the fifth part; and
 the fifth part and the sixth parts are arranged along the first direction, and in the second direction, a minimum width of the fifth part is greater than a maximum width of each of the sixth parts.   
     
     
         4 . The foldable display module according to  claim 3 , wherein in the first direction, a length of each of the sixth parts is less than a length of the second part corresponding thereto, and is less than a length of a corresponding one of the third parts. 
     
     
         5 . The foldable display module according to  claim 3 , wherein outer contours of ends of the second part, ends of the third parts, and ends of the sixth parts are arc shapes; and
 outer contours of connecting parts between the first part and the second part are arc shapes, outer contours of connecting parts between the third parts and the fourth part are arc shapes, and outer contours of connecting parts between the fifth part and the sixth parts are arc shapes.   
     
     
         6 . The foldable display module according to  claim 3 , wherein in at least one second hole group of the second hole groups, the fifth part of one of the second via holes adjacent to a center of the second hole group has a width in the second direction greater than a width of the fifth part of another one of the second via holes away from the center of the second hole group; and
 in at least one second hole group of the second hole groups, each of the sixth parts of one of the second via holes adjacent to the center of the second hole group has a length in the first direction greater than a length of each of the sixth parts of another one of the second via holes away from the center of the second hole group.   
     
     
         7 . The foldable display module according to  claim 3 , wherein in a same one second via hole of the second via holes, in the first direction, a ratio of a length of the second via hole to a length of the fifth part ranges from 12 to 15. 
     
     
         8 . The foldable display module according to  claim 3 , wherein in a same one of the second via holes, in the first direction, a ratio of a maximum width of the fifth part to a minimum width of each of the sixth parts ranges from 1.5 to 2. 
     
     
         9 . The foldable display module according to  claim 1 , wherein in at least one first hole group of the first hole groups, each of the third parts of one of the second kind holes adjacent to a center of the first hole group has a length in the first direction greater than a length of each of the third parts of another one of the second kind holes away from the center of the first hole group. 
     
     
         10 . The foldable display module according to  claim 1 , wherein in a same one second kind hole of the second kind holes, in the first direction, a ratio of a length of the second kind hole to a length of the fourth part ranges from 1.5 to 2.5. 
     
     
         11 . The foldable display module according to  claim 1 , wherein the bending area comprises a first bending sub-area, a first planar sub-area located on a periphery of the first bending sub-area, and a second bending sub-area located on a periphery of the first planar sub-area, and the second bending sub-area is connected to the non-bending areas;
 the first bending center line is located in the first bending sub-area, the first hole groups and the second hole groups are located in the first bending sub-area; and   the support plate further comprises a plurality of third hole groups disposed in the second bending sub-area, an extending direction of each of the third hole groups is parallel to the first direction, and a hole depth of the third hole groups is less than a thickness of the support plate.   
     
     
         12 . The foldable display module according to  claim 11 , wherein the bending area further comprises a second bending center line parallel to the first direction and located in the second bending sub-area; and
 in a direction towards the second bending center line, the hole depth of the third hole groups gradually increases.   
     
     
         13 . The foldable display module according to  claim 12 , wherein a distance between two adjacent ones of the third hole groups gradually decreases in the direction towards the second bending center line. 
     
     
         14 . The foldable display module according to  claim 1 , wherein the display panel further comprises:
 a panel body;   a polarization layer, disposed on a light-emitting side of the panel body;   a window cover, disposed on a side of the polarization layer away from the panel body; and   a backplate, disposed away from the light-emitting side of the panel body,   wherein the support plate is located away from the light-emitting side of the panel body.   
     
     
         15 . A foldable display device, comprising a foldable display module, the foldable display module comprising at least one bending area and non-bending areas connected to the bending area, the bending area connected between two of the non-bending areas, the bending area comprising a first bending center line parallel to a first direction, and the foldable display module comprising:
 a display panel;   a support plate, disposed on a side of the display panel,   wherein the support plate comprises a plurality of first hole groups and a plurality of second hole groups, each of extending directions of the first hole groups and the second hole groups is parallel to the first direction, the first hole groups and the second hole groups are alternately arranged along a second direction, and the second direction is arranged to form a preset angle with the first direction; each of the first hole groups comprises a plurality of first via holes spaced along the first direction, each of the second hole groups comprises a plurality of second via holes spaced along the first direction, and a length of each of the first via holes in the first direction is greater than a length of each of the second via holes in the first direction; and   each of the first hole groups further comprises first spacer parts each located between two adjacent ones of the first via holes; and in the second direction, the second via holes are arranged corresponding to the first spacer parts;   wherein the plurality of first via holes in each first hole group of the first hole groups comprises two first kind holes disposed at both ends of the first hole group and one or more second kind holes disposed between the two first kind holes;   each of the first kind holes comprises a first part adjacent to a corresponding end of the first hole group and a second part away from the corresponding end of the first hole group;   each of the second kind holes comprises two third parts and a fourth part disposed between the two third parts, and the third parts and the fourth part are arranged along the first direction; and   in the second direction, a maximum width of the first part is less than a minimum width of the second part, and a minimum width of each of the third parts is greater than a maximum width of the fourth part.   
     
     
         16 . The foldable display device according to  claim 15 , wherein each of the second via holes comprises a fifth part corresponding to one of the first spacer parts and sixth parts located at both ends of the fifth part; and
 the fifth part and the sixth parts are arranged along the first direction, and in the second direction, a minimum width of the fifth part is greater than a maximum width of each of the sixth parts.   
     
     
         17 . The foldable display device according to  claim 15 , wherein in at least one first hole group of the first hole groups, each of the third parts of one of the second kind holes adjacent to a center of the first hole group has a length in the first direction greater than a length of each of the third parts of another one of the second kind holes away from the center of the first hole group. 
     
     
         18 . The foldable display device according to  claim 15 , wherein the bending area comprises a first bending sub-area, a first planar sub-area located on a periphery of the first bending sub-area, and a second bending sub-area located on a periphery of the first planar sub-area, and the second bending sub-area is connected to the non-bending areas;
 the first bending center line is located in the first bending sub-area, the first hole groups and the second hole groups are located in the first bending sub-area; and   the support plate further comprises a plurality of third hole groups disposed in the second bending sub-area, an extending direction of each of the third hole groups is parallel to the first direction, and a hole depth of the third hole groups is less than a thickness of the support plate.   
     
     
         19 . A foldable display module, comprising at least one bending area and non-bending areas connected to the bending area, the bending area connected between two of the non-bending areas, the bending area comprising a first bending center line parallel to a first direction, and comprising:
 a display panel;   a support plate, disposed on a side of the display panel,   wherein the support plate comprises a plurality of first hole groups and a plurality of second hole groups, each of extending directions of the first hole groups and the second hole groups is parallel to the first direction, the first hole groups and the second hole groups are alternately arranged along a second direction, and the second direction is arranged to form a preset angle with the first direction; each of the first hole groups comprises a plurality of first via holes spaced along the first direction, each of the second hole groups comprises a plurality of second via holes spaced along the first direction, and a length of each of the first via holes in the first direction is greater than a length of each of the second via holes in the first direction; and   each of the first hole groups further comprises first spacer parts each located between two adjacent ones of the first via holes; and in the second direction, the second via holes are arranged corresponding to the first spacer parts;   wherein the bending area comprises a first bending sub-area, a first planar sub-area located on a periphery of the first bending sub-area, and a second bending sub-area located on a periphery of the first planar sub-area, and the second bending sub-area is connected to the non-bending areas;   the first bending center line is located in the first bending sub-area, the first hole groups and the second hole groups are located in the first bending sub-area; and   the support plate further comprises a plurality of third hole groups disposed in the second bending sub-area, an extending direction of each of the third hole groups is parallel to the first direction, and a hole depth of the third hole groups is less than a thickness of the support plate.   
     
     
         20 . The foldable display module according to  claim 19 , wherein the bending area further comprises a second bending center line parallel to the first direction and located in the second bending sub-area; and
 in a direction towards the second bending center line, the hole depth of the third hole groups gradually increases.